When using the linguistic information of words, we aim to capture precise syntactic word relations and phrases of two or more words can be formed [1]}, [2]}, [3]}. Such phrases can be noun phrases or clusters of words such as adjective-noun or adverb-noun. Some alternative models including combination of statistical and syntactic phrases have been proposed in the VSM [4]}. Salton analysed syntactic constructions in texts and assigned importance weights to the term phrases identified in order to choose phrases to use in the index for his books[5]}. However, both approaches to forming phrases result in long vectors representing the meaning of texts.
